All 1 entries tagged Planet

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August 26, 2006

My Very Easy Method Just Speeds Up Naming…

Writing about web page

…well, nothing actually; Pluto's not a planet anymore.

Apparently, after discovering a random block of ice in the Kupier Belt (think Asteroid Belt, but ice and out past Pluto – which is still there, of course, it's just not a planet) that was bigger than Pluto, Scientists decided that the definition of a planet needed tighteing. So, for something to be classed as a planet:

  • it must be in orbit around the Sun
  • it must be large enough that it takes on a nearly round shape
  • it has cleared its orbit of other objects

Since Pluto's orbit crosses Neptune's, it therefore doesn't fulfil these criteria…

So, remember: There are only 8 planets in the Solar System.

It's not a very suprising decision, really; some moons are bigger than Pluto…

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